"A nonfiction companion to Magic Tree House #54: Balto of the Blue dawn."-- Provided by publisher. "...Jack and Annie track the facts about the Iditarod, open water swimming, the Ironman triathlon, free climbing, the X Games, and other ways people test their limits."--Amazon.com.

For a rugged outdoor man and his family, life in northern Minnesota is a wild experience involving wolves, deer, and the sled dogs that make their way of life possible. Includes an account of the author's first Iditarod, a dogsled race across Alaska.